./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:07:11,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:07:11,585 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:07:11,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:07:11,590 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:07:11,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:07:11,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:07:11,614 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:07:11,615 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:07:11,615 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:07:11,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:07:11,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:07:11,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:07:11,616 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:07:11,616 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:07:11,616 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:07:11,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:07:11,617 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:07:11,617 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:07:11,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:07:11,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:07:11,620 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:07:11,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:07:11,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:07:11,620 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:07:11,620 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:07:11,620 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:07:11,621 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:07:11,621 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:07:11,621 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:07:11,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:07:11,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:07:11,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:07:11,622 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:07:11,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:07:11,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:07:11,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:07:11,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:07:11,622 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:07:11,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:07:11,622 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:07:11,623 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:07:11,623 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:07:11,623 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:07:11,623 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2024-11-19 14:07:11,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:07:11,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:07:11,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:07:11,832 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:07:11,832 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:07:11,833 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-11-19 14:07:13,044 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:07:13,200 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:07:13,200 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-11-19 14:07:13,208 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92637eac1/97526a3b875a448a9b0885628d6ff083/FLAG175dab8d2 [2024-11-19 14:07:13,220 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92637eac1/97526a3b875a448a9b0885628d6ff083 [2024-11-19 14:07:13,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:07:13,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:07:13,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:07:13,227 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:07:13,231 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:07:13,231 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:07:13" (1/1) ... [2024-11-19 14:07:13,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@453410a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:13, skipping insertion in model container [2024-11-19 14:07:13,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:07:13" (1/1) ... [2024-11-19 14:07:13,252 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:07:13,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:07:13,421 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:07:13,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:07:13,450 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:07:13,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:13 WrapperNode [2024-11-19 14:07:13,451 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:07:13,452 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:07:13,452 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:07:13,452 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:07:13,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:13" (1/1) ... [2024-11-19 14:07:13,462 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:13" (1/1) ... [2024-11-19 14:07:13,487 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 234 [2024-11-19 14:07:13,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:07:13,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:07:13,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:07:13,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:07:13,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:13" (1/1) ... [2024-11-19 14:07:13,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:13" (1/1) ... [2024-11-19 14:07:13,503 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:13" (1/1) ... [2024-11-19 14:07:13,545 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 14:07:13,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:13" (1/1) ... [2024-11-19 14:07:13,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:13" (1/1) ... [2024-11-19 14:07:13,550 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:13" (1/1) ... [2024-11-19 14:07:13,553 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:13" (1/1) ... [2024-11-19 14:07:13,555 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:13" (1/1) ... [2024-11-19 14:07:13,556 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:13" (1/1) ... [2024-11-19 14:07:13,558 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:07:13,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:07:13,572 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:07:13,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:07:13,573 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:13" (1/1) ... [2024-11-19 14:07:13,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:07:13,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:13,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:07:13,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:07:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:07:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:07:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:07:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:07:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:07:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:07:13,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:07:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:07:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:07:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:07:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:07:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 14:07:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 14:07:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:07:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:07:13,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:07:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:07:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:07:13,645 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:07:13,736 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:07:13,737 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:07:14,043 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:07:14,043 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:07:14,329 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:07:14,329 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 14:07:14,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:07:14 BoogieIcfgContainer [2024-11-19 14:07:14,330 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:07:14,331 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:07:14,331 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:07:14,334 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:07:14,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:07:13" (1/3) ... [2024-11-19 14:07:14,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ea5877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:07:14, skipping insertion in model container [2024-11-19 14:07:14,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:13" (2/3) ... [2024-11-19 14:07:14,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ea5877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:07:14, skipping insertion in model container [2024-11-19 14:07:14,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:07:14" (3/3) ... [2024-11-19 14:07:14,337 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2024-11-19 14:07:14,350 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:07:14,350 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-19 14:07:14,350 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:07:14,438 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 14:07:14,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 65 transitions, 151 flow [2024-11-19 14:07:14,503 INFO L124 PetriNetUnfolderBase]: 4/62 cut-off events. [2024-11-19 14:07:14,503 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 14:07:14,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 4/62 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 226 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2024-11-19 14:07:14,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 65 transitions, 151 flow [2024-11-19 14:07:14,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 60 transitions, 135 flow [2024-11-19 14:07:14,521 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:07:14,527 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@42d4c5cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:07:14,527 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-11-19 14:07:14,530 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:07:14,530 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:07:14,531 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:07:14,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:14,531 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:07:14,532 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:14,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:14,536 INFO L85 PathProgramCache]: Analyzing trace with hash 773833, now seen corresponding path program 1 times [2024-11-19 14:07:14,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:14,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832962160] [2024-11-19 14:07:14,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:14,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:14,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:14,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:14,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832962160] [2024-11-19 14:07:14,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832962160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:14,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:14,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:07:14,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362451469] [2024-11-19 14:07:14,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:14,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:14,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:14,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:14,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:14,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-11-19 14:07:14,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:14,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:14,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-11-19 14:07:14,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:15,478 INFO L124 PetriNetUnfolderBase]: 2971/4590 cut-off events. [2024-11-19 14:07:15,478 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-19 14:07:15,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9031 conditions, 4590 events. 2971/4590 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 29803 event pairs, 2534 based on Foata normal form. 1/2610 useless extension candidates. Maximal degree in co-relation 8514. Up to 4217 conditions per place. [2024-11-19 14:07:15,501 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 37 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-11-19 14:07:15,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 211 flow [2024-11-19 14:07:15,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:15,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-11-19 14:07:15,510 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-11-19 14:07:15,511 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 135 flow. Second operand 4 states and 125 transitions. [2024-11-19 14:07:15,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 211 flow [2024-11-19 14:07:15,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 202 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:07:15,518 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 143 flow [2024-11-19 14:07:15,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-11-19 14:07:15,521 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2024-11-19 14:07:15,521 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 143 flow [2024-11-19 14:07:15,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:15,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:15,522 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:07:15,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:07:15,522 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:15,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:15,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1579194334, now seen corresponding path program 1 times [2024-11-19 14:07:15,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:15,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39975118] [2024-11-19 14:07:15,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:15,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:15,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:15,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:15,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39975118] [2024-11-19 14:07:15,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39975118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:15,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673485569] [2024-11-19 14:07:15,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:15,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:15,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:15,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:15,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:07:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:15,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:07:15,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:15,744 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:07:15,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673485569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:15,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:07:15,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:07:15,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377383681] [2024-11-19 14:07:15,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:15,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:07:15,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:15,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:07:15,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:07:15,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-11-19 14:07:15,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:15,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:15,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-11-19 14:07:15,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:16,320 INFO L124 PetriNetUnfolderBase]: 2971/4589 cut-off events. [2024-11-19 14:07:16,321 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-19 14:07:16,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8959 conditions, 4589 events. 2971/4589 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 29904 event pairs, 2534 based on Foata normal form. 1/2610 useless extension candidates. Maximal degree in co-relation 8932. Up to 4212 conditions per place. [2024-11-19 14:07:16,342 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 33 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-11-19 14:07:16,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 219 flow [2024-11-19 14:07:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:07:16,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:07:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-11-19 14:07:16,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-11-19 14:07:16,346 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 143 flow. Second operand 6 states and 155 transitions. [2024-11-19 14:07:16,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 219 flow [2024-11-19 14:07:16,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:07:16,348 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 150 flow [2024-11-19 14:07:16,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-11-19 14:07:16,350 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -3 predicate places. [2024-11-19 14:07:16,350 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 150 flow [2024-11-19 14:07:16,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:16,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:16,351 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 14:07:16,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:07:16,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:16,552 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:16,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:16,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1581743135, now seen corresponding path program 1 times [2024-11-19 14:07:16,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:16,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035444403] [2024-11-19 14:07:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:16,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:16,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:16,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035444403] [2024-11-19 14:07:16,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035444403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:16,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:16,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:07:16,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116883670] [2024-11-19 14:07:16,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:16,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:07:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:16,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:07:16,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:07:16,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-11-19 14:07:16,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:16,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:16,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-11-19 14:07:16,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:17,413 INFO L124 PetriNetUnfolderBase]: 4377/6876 cut-off events. [2024-11-19 14:07:17,413 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-19 14:07:17,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13382 conditions, 6876 events. 4377/6876 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 46724 event pairs, 3263 based on Foata normal form. 0/4093 useless extension candidates. Maximal degree in co-relation 10025. Up to 4714 conditions per place. [2024-11-19 14:07:17,443 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 82 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2024-11-19 14:07:17,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 103 transitions, 427 flow [2024-11-19 14:07:17,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:07:17,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:07:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2024-11-19 14:07:17,447 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5784615384615385 [2024-11-19 14:07:17,447 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 150 flow. Second operand 5 states and 188 transitions. [2024-11-19 14:07:17,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 103 transitions, 427 flow [2024-11-19 14:07:17,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 405 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-19 14:07:17,450 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 153 flow [2024-11-19 14:07:17,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-11-19 14:07:17,451 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -2 predicate places. [2024-11-19 14:07:17,452 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 153 flow [2024-11-19 14:07:17,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:17,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:17,452 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:07:17,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 14:07:17,453 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:17,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:17,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1710384875, now seen corresponding path program 1 times [2024-11-19 14:07:17,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:17,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789201482] [2024-11-19 14:07:17,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:17,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:17,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:17,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:17,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789201482] [2024-11-19 14:07:17,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789201482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:17,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562665683] [2024-11-19 14:07:17,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:17,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:17,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:17,537 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:17,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:07:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:17,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:07:17,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:17,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:17,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562665683] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:17,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:17,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:07:17,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861239284] [2024-11-19 14:07:17,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:17,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:07:17,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:17,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:07:17,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:07:17,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-11-19 14:07:17,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 153 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:17,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:17,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-11-19 14:07:17,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:18,276 INFO L124 PetriNetUnfolderBase]: 4026/6344 cut-off events. [2024-11-19 14:07:18,276 INFO L125 PetriNetUnfolderBase]: For 1171/1275 co-relation queries the response was YES. [2024-11-19 14:07:18,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13244 conditions, 6344 events. 4026/6344 cut-off events. For 1171/1275 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 43714 event pairs, 3468 based on Foata normal form. 3/3762 useless extension candidates. Maximal degree in co-relation 9327. Up to 5782 conditions per place. [2024-11-19 14:07:18,298 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 38 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2024-11-19 14:07:18,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 285 flow [2024-11-19 14:07:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:07:18,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:07:18,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-11-19 14:07:18,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3723076923076923 [2024-11-19 14:07:18,300 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 153 flow. Second operand 10 states and 242 transitions. [2024-11-19 14:07:18,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 285 flow [2024-11-19 14:07:18,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:18,302 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 222 flow [2024-11-19 14:07:18,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=222, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2024-11-19 14:07:18,304 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2024-11-19 14:07:18,304 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 222 flow [2024-11-19 14:07:18,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:18,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:18,305 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:18,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 14:07:18,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-19 14:07:18,509 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:18,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:18,509 INFO L85 PathProgramCache]: Analyzing trace with hash -400621260, now seen corresponding path program 1 times [2024-11-19 14:07:18,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:18,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917558490] [2024-11-19 14:07:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:18,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:18,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:18,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917558490] [2024-11-19 14:07:18,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917558490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:18,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:18,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:07:18,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90189770] [2024-11-19 14:07:18,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:18,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:07:18,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:18,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:07:18,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:07:18,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-11-19 14:07:18,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:18,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:18,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-11-19 14:07:18,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:19,221 INFO L124 PetriNetUnfolderBase]: 3682/5799 cut-off events. [2024-11-19 14:07:19,221 INFO L125 PetriNetUnfolderBase]: For 709/871 co-relation queries the response was YES. [2024-11-19 14:07:19,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11856 conditions, 5799 events. 3682/5799 cut-off events. For 709/871 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 38055 event pairs, 3023 based on Foata normal form. 0/3441 useless extension candidates. Maximal degree in co-relation 11820. Up to 4743 conditions per place. [2024-11-19 14:07:19,248 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 76 selfloop transitions, 5 changer transitions 2/99 dead transitions. [2024-11-19 14:07:19,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 99 transitions, 469 flow [2024-11-19 14:07:19,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:07:19,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:07:19,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-11-19 14:07:19,250 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-11-19 14:07:19,250 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 222 flow. Second operand 5 states and 175 transitions. [2024-11-19 14:07:19,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 99 transitions, 469 flow [2024-11-19 14:07:19,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 458 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:19,253 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 236 flow [2024-11-19 14:07:19,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-11-19 14:07:19,253 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-11-19 14:07:19,254 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 236 flow [2024-11-19 14:07:19,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:19,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:19,254 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:19,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:07:19,255 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:19,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:19,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1290035478, now seen corresponding path program 1 times [2024-11-19 14:07:19,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:19,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486251950] [2024-11-19 14:07:19,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:19,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:19,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:19,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486251950] [2024-11-19 14:07:19,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486251950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:19,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907726402] [2024-11-19 14:07:19,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:19,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:19,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:19,483 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:19,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:07:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:19,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 14:07:19,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:19,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:07:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:19,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:19,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-19 14:07:19,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-19 14:07:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:19,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907726402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:19,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:19,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-19 14:07:19,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258298510] [2024-11-19 14:07:19,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:19,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 14:07:19,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:19,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 14:07:19,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-19 14:07:19,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-19 14:07:19,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 236 flow. Second operand has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:19,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:19,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-19 14:07:19,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:20,802 INFO L124 PetriNetUnfolderBase]: 5230/8958 cut-off events. [2024-11-19 14:07:20,803 INFO L125 PetriNetUnfolderBase]: For 1490/1867 co-relation queries the response was YES. [2024-11-19 14:07:20,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18203 conditions, 8958 events. 5230/8958 cut-off events. For 1490/1867 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 70477 event pairs, 1573 based on Foata normal form. 0/5564 useless extension candidates. Maximal degree in co-relation 18165. Up to 2500 conditions per place. [2024-11-19 14:07:20,848 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 99 selfloop transitions, 16 changer transitions 1/133 dead transitions. [2024-11-19 14:07:20,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 133 transitions, 618 flow [2024-11-19 14:07:20,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 14:07:20,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 14:07:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 276 transitions. [2024-11-19 14:07:20,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5307692307692308 [2024-11-19 14:07:20,850 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 236 flow. Second operand 8 states and 276 transitions. [2024-11-19 14:07:20,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 133 transitions, 618 flow [2024-11-19 14:07:20,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 133 transitions, 613 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:20,854 INFO L231 Difference]: Finished difference. Result has 85 places, 75 transitions, 304 flow [2024-11-19 14:07:20,854 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=304, PETRI_PLACES=85, PETRI_TRANSITIONS=75} [2024-11-19 14:07:20,855 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 19 predicate places. [2024-11-19 14:07:20,855 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 75 transitions, 304 flow [2024-11-19 14:07:20,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:20,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:20,855 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:20,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:07:21,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:21,057 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:21,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:21,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1290035477, now seen corresponding path program 1 times [2024-11-19 14:07:21,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:21,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522805556] [2024-11-19 14:07:21,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:21,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:21,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:21,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522805556] [2024-11-19 14:07:21,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522805556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:21,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429955554] [2024-11-19 14:07:21,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:21,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:21,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:21,246 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:21,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:07:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:21,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 14:07:21,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:21,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:07:21,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:21,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:21,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-19 14:07:21,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-19 14:07:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:21,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429955554] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:21,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:21,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-19 14:07:21,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152946997] [2024-11-19 14:07:21,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:21,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 14:07:21,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:21,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 14:07:21,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-19 14:07:21,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-19 14:07:21,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 75 transitions, 304 flow. Second operand has 13 states, 13 states have (on average 22.53846153846154) internal successors, (293), 13 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:21,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:21,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-19 14:07:21,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:22,320 INFO L124 PetriNetUnfolderBase]: 4876/8459 cut-off events. [2024-11-19 14:07:22,320 INFO L125 PetriNetUnfolderBase]: For 3929/4287 co-relation queries the response was YES. [2024-11-19 14:07:22,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20080 conditions, 8459 events. 4876/8459 cut-off events. For 3929/4287 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 65799 event pairs, 1573 based on Foata normal form. 0/5501 useless extension candidates. Maximal degree in co-relation 20039. Up to 2359 conditions per place. [2024-11-19 14:07:22,362 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 98 selfloop transitions, 16 changer transitions 1/132 dead transitions. [2024-11-19 14:07:22,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 132 transitions, 666 flow [2024-11-19 14:07:22,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 14:07:22,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 14:07:22,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-11-19 14:07:22,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5288461538461539 [2024-11-19 14:07:22,366 INFO L175 Difference]: Start difference. First operand has 85 places, 75 transitions, 304 flow. Second operand 8 states and 275 transitions. [2024-11-19 14:07:22,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 132 transitions, 666 flow [2024-11-19 14:07:22,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 132 transitions, 649 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-19 14:07:22,373 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 315 flow [2024-11-19 14:07:22,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=315, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2024-11-19 14:07:22,374 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 21 predicate places. [2024-11-19 14:07:22,375 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 315 flow [2024-11-19 14:07:22,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.53846153846154) internal successors, (293), 13 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:22,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:22,376 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:22,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:07:22,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:22,579 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:22,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:22,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1290035474, now seen corresponding path program 1 times [2024-11-19 14:07:22,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:22,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644746395] [2024-11-19 14:07:22,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:22,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:22,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:22,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644746395] [2024-11-19 14:07:22,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644746395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:22,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:22,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:07:22,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961834190] [2024-11-19 14:07:22,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:22,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:07:22,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:22,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:07:22,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:07:22,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-19 14:07:22,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:22,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:22,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-19 14:07:22,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:23,330 INFO L124 PetriNetUnfolderBase]: 4512/8124 cut-off events. [2024-11-19 14:07:23,330 INFO L125 PetriNetUnfolderBase]: For 6519/6818 co-relation queries the response was YES. [2024-11-19 14:07:23,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20000 conditions, 8124 events. 4512/8124 cut-off events. For 6519/6818 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 63834 event pairs, 1253 based on Foata normal form. 0/5710 useless extension candidates. Maximal degree in co-relation 19959. Up to 4355 conditions per place. [2024-11-19 14:07:23,370 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 76 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2024-11-19 14:07:23,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 95 transitions, 518 flow [2024-11-19 14:07:23,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:07:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:07:23,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-19 14:07:23,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6461538461538462 [2024-11-19 14:07:23,375 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 315 flow. Second operand 3 states and 126 transitions. [2024-11-19 14:07:23,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 95 transitions, 518 flow [2024-11-19 14:07:23,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 503 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:07:23,379 INFO L231 Difference]: Finished difference. Result has 84 places, 72 transitions, 296 flow [2024-11-19 14:07:23,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2024-11-19 14:07:23,380 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 18 predicate places. [2024-11-19 14:07:23,380 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 72 transitions, 296 flow [2024-11-19 14:07:23,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:23,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:23,381 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:23,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 14:07:23,381 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:23,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:23,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1536299316, now seen corresponding path program 1 times [2024-11-19 14:07:23,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:23,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832387800] [2024-11-19 14:07:23,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:23,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:23,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:23,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832387800] [2024-11-19 14:07:23,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832387800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:23,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:23,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:07:23,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605161120] [2024-11-19 14:07:23,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:23,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:07:23,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:23,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:07:23,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:07:23,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-11-19 14:07:23,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 72 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:23,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:23,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-11-19 14:07:23,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:24,317 INFO L124 PetriNetUnfolderBase]: 4769/7585 cut-off events. [2024-11-19 14:07:24,317 INFO L125 PetriNetUnfolderBase]: For 6642/7180 co-relation queries the response was YES. [2024-11-19 14:07:24,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19872 conditions, 7585 events. 4769/7585 cut-off events. For 6642/7180 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 51695 event pairs, 4132 based on Foata normal form. 0/5093 useless extension candidates. Maximal degree in co-relation 19831. Up to 6599 conditions per place. [2024-11-19 14:07:24,356 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 49 selfloop transitions, 2 changer transitions 22/89 dead transitions. [2024-11-19 14:07:24,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 498 flow [2024-11-19 14:07:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:07:24,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:07:24,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-11-19 14:07:24,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49846153846153846 [2024-11-19 14:07:24,358 INFO L175 Difference]: Start difference. First operand has 84 places, 72 transitions, 296 flow. Second operand 5 states and 162 transitions. [2024-11-19 14:07:24,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 498 flow [2024-11-19 14:07:24,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:07:24,363 INFO L231 Difference]: Finished difference. Result has 89 places, 67 transitions, 276 flow [2024-11-19 14:07:24,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=89, PETRI_TRANSITIONS=67} [2024-11-19 14:07:24,364 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 23 predicate places. [2024-11-19 14:07:24,364 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 67 transitions, 276 flow [2024-11-19 14:07:24,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:24,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:24,364 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:24,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 14:07:24,364 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:24,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:24,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1521484720, now seen corresponding path program 1 times [2024-11-19 14:07:24,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:24,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793717879] [2024-11-19 14:07:24,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:24,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:24,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:24,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793717879] [2024-11-19 14:07:24,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793717879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:24,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:24,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:07:24,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066903403] [2024-11-19 14:07:24,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:24,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:24,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:24,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:24,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:24,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-11-19 14:07:24,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 67 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:24,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:24,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-11-19 14:07:24,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:25,057 INFO L124 PetriNetUnfolderBase]: 5587/8602 cut-off events. [2024-11-19 14:07:25,057 INFO L125 PetriNetUnfolderBase]: For 5862/6477 co-relation queries the response was YES. [2024-11-19 14:07:25,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22017 conditions, 8602 events. 5587/8602 cut-off events. For 5862/6477 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 58866 event pairs, 2113 based on Foata normal form. 292/6275 useless extension candidates. Maximal degree in co-relation 21989. Up to 6433 conditions per place. [2024-11-19 14:07:25,097 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 92 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2024-11-19 14:07:25,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 110 transitions, 576 flow [2024-11-19 14:07:25,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:25,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:25,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-11-19 14:07:25,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6115384615384616 [2024-11-19 14:07:25,099 INFO L175 Difference]: Start difference. First operand has 89 places, 67 transitions, 276 flow. Second operand 4 states and 159 transitions. [2024-11-19 14:07:25,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 110 transitions, 576 flow [2024-11-19 14:07:25,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 110 transitions, 538 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-11-19 14:07:25,110 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 275 flow [2024-11-19 14:07:25,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-11-19 14:07:25,110 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2024-11-19 14:07:25,111 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 275 flow [2024-11-19 14:07:25,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:25,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:25,111 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:25,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 14:07:25,111 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:25,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:25,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1484102979, now seen corresponding path program 1 times [2024-11-19 14:07:25,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:25,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120158075] [2024-11-19 14:07:25,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:25,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:25,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:25,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120158075] [2024-11-19 14:07:25,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120158075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:25,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:25,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:07:25,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831885260] [2024-11-19 14:07:25,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:25,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:07:25,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:25,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:07:25,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:07:25,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-19 14:07:25,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:25,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:25,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-19 14:07:25,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:25,845 INFO L124 PetriNetUnfolderBase]: 5773/9600 cut-off events. [2024-11-19 14:07:25,846 INFO L125 PetriNetUnfolderBase]: For 9032/9032 co-relation queries the response was YES. [2024-11-19 14:07:25,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24197 conditions, 9600 events. 5773/9600 cut-off events. For 9032/9032 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 71322 event pairs, 1694 based on Foata normal form. 0/6632 useless extension candidates. Maximal degree in co-relation 24165. Up to 5988 conditions per place. [2024-11-19 14:07:25,882 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 73 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2024-11-19 14:07:25,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 94 transitions, 539 flow [2024-11-19 14:07:25,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:07:25,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:07:25,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-19 14:07:25,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6461538461538462 [2024-11-19 14:07:25,884 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 275 flow. Second operand 3 states and 126 transitions. [2024-11-19 14:07:25,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 94 transitions, 539 flow [2024-11-19 14:07:25,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 94 transitions, 527 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:25,887 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 294 flow [2024-11-19 14:07:25,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2024-11-19 14:07:25,887 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 16 predicate places. [2024-11-19 14:07:25,888 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 294 flow [2024-11-19 14:07:25,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:25,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:25,888 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:25,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 14:07:25,888 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:25,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:25,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1484102975, now seen corresponding path program 1 times [2024-11-19 14:07:25,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:25,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498309189] [2024-11-19 14:07:25,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:25,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:25,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:25,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:25,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498309189] [2024-11-19 14:07:25,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498309189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:25,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501896935] [2024-11-19 14:07:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:25,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:25,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:25,995 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:25,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:07:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:26,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 14:07:26,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:26,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:07:26,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:26,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:26,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-19 14:07:26,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-19 14:07:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:26,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501896935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:26,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:26,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-19 14:07:26,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669144828] [2024-11-19 14:07:26,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:26,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 14:07:26,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:26,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 14:07:26,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-19 14:07:26,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-19 14:07:26,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 294 flow. Second operand has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:26,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:26,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-19 14:07:26,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:27,217 INFO L124 PetriNetUnfolderBase]: 7770/12807 cut-off events. [2024-11-19 14:07:27,217 INFO L125 PetriNetUnfolderBase]: For 9619/9619 co-relation queries the response was YES. [2024-11-19 14:07:27,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33788 conditions, 12807 events. 7770/12807 cut-off events. For 9619/9619 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 97886 event pairs, 2218 based on Foata normal form. 0/9671 useless extension candidates. Maximal degree in co-relation 33754. Up to 4112 conditions per place. [2024-11-19 14:07:27,275 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 90 selfloop transitions, 15 changer transitions 0/123 dead transitions. [2024-11-19 14:07:27,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 123 transitions, 737 flow [2024-11-19 14:07:27,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 14:07:27,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 14:07:27,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 253 transitions. [2024-11-19 14:07:27,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48653846153846153 [2024-11-19 14:07:27,276 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 294 flow. Second operand 8 states and 253 transitions. [2024-11-19 14:07:27,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 123 transitions, 737 flow [2024-11-19 14:07:27,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 123 transitions, 733 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:07:27,280 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 366 flow [2024-11-19 14:07:27,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=366, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-11-19 14:07:27,281 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2024-11-19 14:07:27,281 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 366 flow [2024-11-19 14:07:27,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:27,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:27,282 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:27,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 14:07:27,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 14:07:27,482 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:27,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:27,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1484102976, now seen corresponding path program 1 times [2024-11-19 14:07:27,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:27,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541463707] [2024-11-19 14:07:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:27,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:27,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:27,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541463707] [2024-11-19 14:07:27,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541463707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:27,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329424416] [2024-11-19 14:07:27,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:27,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:27,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:27,629 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:27,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:07:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:27,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 14:07:27,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:27,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:07:27,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:27,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:27,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-19 14:07:27,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-19 14:07:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:27,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329424416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:27,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:27,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-19 14:07:27,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961609551] [2024-11-19 14:07:27,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:27,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 14:07:27,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:27,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 14:07:27,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-19 14:07:27,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-19 14:07:27,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 366 flow. Second operand has 13 states, 13 states have (on average 23.0) internal successors, (299), 13 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:27,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:27,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-19 14:07:27,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:29,149 INFO L124 PetriNetUnfolderBase]: 7018/11861 cut-off events. [2024-11-19 14:07:29,149 INFO L125 PetriNetUnfolderBase]: For 12693/12693 co-relation queries the response was YES. [2024-11-19 14:07:29,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35255 conditions, 11861 events. 7018/11861 cut-off events. For 12693/12693 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 92867 event pairs, 2060 based on Foata normal form. 310/9412 useless extension candidates. Maximal degree in co-relation 35216. Up to 3906 conditions per place. [2024-11-19 14:07:29,212 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 89 selfloop transitions, 15 changer transitions 0/122 dead transitions. [2024-11-19 14:07:29,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 122 transitions, 784 flow [2024-11-19 14:07:29,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 14:07:29,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 14:07:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-11-19 14:07:29,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-11-19 14:07:29,214 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 366 flow. Second operand 8 states and 252 transitions. [2024-11-19 14:07:29,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 122 transitions, 784 flow [2024-11-19 14:07:29,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 122 transitions, 774 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:07:29,219 INFO L231 Difference]: Finished difference. Result has 93 places, 75 transitions, 382 flow [2024-11-19 14:07:29,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=382, PETRI_PLACES=93, PETRI_TRANSITIONS=75} [2024-11-19 14:07:29,220 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 27 predicate places. [2024-11-19 14:07:29,220 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 75 transitions, 382 flow [2024-11-19 14:07:29,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.0) internal successors, (299), 13 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:29,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:29,220 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:29,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 14:07:29,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:29,421 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:29,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash 293847717, now seen corresponding path program 1 times [2024-11-19 14:07:29,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:29,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956917560] [2024-11-19 14:07:29,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:29,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:29,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:29,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:29,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956917560] [2024-11-19 14:07:29,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956917560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:29,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:29,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:07:29,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235630336] [2024-11-19 14:07:29,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:29,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:29,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:29,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:29,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:29,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-11-19 14:07:29,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 75 transitions, 382 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:29,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:29,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-11-19 14:07:29,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:30,554 INFO L124 PetriNetUnfolderBase]: 9082/13791 cut-off events. [2024-11-19 14:07:30,554 INFO L125 PetriNetUnfolderBase]: For 19136/19136 co-relation queries the response was YES. [2024-11-19 14:07:30,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44333 conditions, 13791 events. 9082/13791 cut-off events. For 19136/19136 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 96836 event pairs, 4504 based on Foata normal form. 428/11255 useless extension candidates. Maximal degree in co-relation 44294. Up to 9028 conditions per place. [2024-11-19 14:07:30,620 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 104 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-11-19 14:07:30,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 123 transitions, 814 flow [2024-11-19 14:07:30,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-11-19 14:07:30,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6115384615384616 [2024-11-19 14:07:30,621 INFO L175 Difference]: Start difference. First operand has 93 places, 75 transitions, 382 flow. Second operand 4 states and 159 transitions. [2024-11-19 14:07:30,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 123 transitions, 814 flow [2024-11-19 14:07:30,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 123 transitions, 801 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:07:30,629 INFO L231 Difference]: Finished difference. Result has 93 places, 76 transitions, 390 flow [2024-11-19 14:07:30,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=93, PETRI_TRANSITIONS=76} [2024-11-19 14:07:30,630 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 27 predicate places. [2024-11-19 14:07:30,630 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 76 transitions, 390 flow [2024-11-19 14:07:30,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:30,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:30,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:30,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 14:07:30,630 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:30,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:30,630 INFO L85 PathProgramCache]: Analyzing trace with hash 280090236, now seen corresponding path program 1 times [2024-11-19 14:07:30,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:30,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876784287] [2024-11-19 14:07:30,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:30,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:30,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:30,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876784287] [2024-11-19 14:07:30,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876784287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:30,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011980887] [2024-11-19 14:07:30,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:30,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:30,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:30,871 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:30,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:07:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:30,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 14:07:30,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:30,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 14:07:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:31,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:31,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-19 14:07:31,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-19 14:07:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:31,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011980887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:31,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:31,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-19 14:07:31,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128011276] [2024-11-19 14:07:31,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:31,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 14:07:31,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:31,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 14:07:31,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-11-19 14:07:31,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-11-19 14:07:31,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 76 transitions, 390 flow. Second operand has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:31,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:31,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-11-19 14:07:31,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:36,478 INFO L124 PetriNetUnfolderBase]: 28447/43984 cut-off events. [2024-11-19 14:07:36,478 INFO L125 PetriNetUnfolderBase]: For 74909/74909 co-relation queries the response was YES. [2024-11-19 14:07:36,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147861 conditions, 43984 events. 28447/43984 cut-off events. For 74909/74909 co-relation queries the response was YES. Maximal size of possible extension queue 2242. Compared 361853 event pairs, 10806 based on Foata normal form. 0/32850 useless extension candidates. Maximal degree in co-relation 147822. Up to 8965 conditions per place. [2024-11-19 14:07:36,790 INFO L140 encePairwiseOnDemand]: 52/65 looper letters, 284 selfloop transitions, 35 changer transitions 0/336 dead transitions. [2024-11-19 14:07:36,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 336 transitions, 2558 flow [2024-11-19 14:07:36,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 14:07:36,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 14:07:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 510 transitions. [2024-11-19 14:07:36,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5230769230769231 [2024-11-19 14:07:36,792 INFO L175 Difference]: Start difference. First operand has 93 places, 76 transitions, 390 flow. Second operand 15 states and 510 transitions. [2024-11-19 14:07:36,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 336 transitions, 2558 flow [2024-11-19 14:07:36,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 336 transitions, 2504 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:36,819 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 590 flow [2024-11-19 14:07:36,819 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=590, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2024-11-19 14:07:36,820 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 44 predicate places. [2024-11-19 14:07:36,820 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 590 flow [2024-11-19 14:07:36,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:36,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:36,820 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:36,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 14:07:37,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:37,021 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:37,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:37,022 INFO L85 PathProgramCache]: Analyzing trace with hash 280090235, now seen corresponding path program 1 times [2024-11-19 14:07:37,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:37,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559189734] [2024-11-19 14:07:37,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:37,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:37,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:37,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559189734] [2024-11-19 14:07:37,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559189734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:37,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173392108] [2024-11-19 14:07:37,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:37,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:37,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:37,280 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:37,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 14:07:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:37,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 14:07:37,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:37,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 14:07:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:37,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:37,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-19 14:07:37,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-19 14:07:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:37,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173392108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:37,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:37,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-19 14:07:37,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078562879] [2024-11-19 14:07:37,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:37,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 14:07:37,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:37,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 14:07:37,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-11-19 14:07:38,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-11-19 14:07:38,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 590 flow. Second operand has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:38,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:38,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-11-19 14:07:38,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:43,725 INFO L124 PetriNetUnfolderBase]: 27421/42856 cut-off events. [2024-11-19 14:07:43,726 INFO L125 PetriNetUnfolderBase]: For 70088/70088 co-relation queries the response was YES. [2024-11-19 14:07:43,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157484 conditions, 42856 events. 27421/42856 cut-off events. For 70088/70088 co-relation queries the response was YES. Maximal size of possible extension queue 2183. Compared 356331 event pairs, 10806 based on Foata normal form. 536/33847 useless extension candidates. Maximal degree in co-relation 157436. Up to 8845 conditions per place. [2024-11-19 14:07:44,053 INFO L140 encePairwiseOnDemand]: 52/65 looper letters, 282 selfloop transitions, 35 changer transitions 0/334 dead transitions. [2024-11-19 14:07:44,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 334 transitions, 2646 flow [2024-11-19 14:07:44,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 14:07:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 14:07:44,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 508 transitions. [2024-11-19 14:07:44,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.521025641025641 [2024-11-19 14:07:44,055 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 590 flow. Second operand 15 states and 508 transitions. [2024-11-19 14:07:44,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 334 transitions, 2646 flow [2024-11-19 14:07:44,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 334 transitions, 2637 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:07:44,246 INFO L231 Difference]: Finished difference. Result has 120 places, 102 transitions, 655 flow [2024-11-19 14:07:44,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=655, PETRI_PLACES=120, PETRI_TRANSITIONS=102} [2024-11-19 14:07:44,246 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 54 predicate places. [2024-11-19 14:07:44,246 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 102 transitions, 655 flow [2024-11-19 14:07:44,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:44,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:44,247 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:44,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 14:07:44,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 14:07:44,448 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:44,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:44,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1762250554, now seen corresponding path program 1 times [2024-11-19 14:07:44,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:44,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787734902] [2024-11-19 14:07:44,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:44,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:44,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:44,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787734902] [2024-11-19 14:07:44,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787734902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:44,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628812124] [2024-11-19 14:07:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:44,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:44,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:44,538 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:44,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 14:07:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:44,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 14:07:44,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:44,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:44,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:44,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628812124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:44,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:44,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-19 14:07:44,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555526217] [2024-11-19 14:07:44,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:44,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 14:07:44,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:44,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 14:07:44,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-19 14:07:44,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2024-11-19 14:07:44,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 102 transitions, 655 flow. Second operand has 20 states, 20 states have (on average 16.55) internal successors, (331), 20 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:44,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:44,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2024-11-19 14:07:44,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:49,800 INFO L124 PetriNetUnfolderBase]: 28635/44137 cut-off events. [2024-11-19 14:07:49,801 INFO L125 PetriNetUnfolderBase]: For 90623/91816 co-relation queries the response was YES. [2024-11-19 14:07:49,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167176 conditions, 44137 events. 28635/44137 cut-off events. For 90623/91816 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 351251 event pairs, 20708 based on Foata normal form. 689/35803 useless extension candidates. Maximal degree in co-relation 167126. Up to 30864 conditions per place. [2024-11-19 14:07:50,145 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 201 selfloop transitions, 16 changer transitions 0/232 dead transitions. [2024-11-19 14:07:50,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 232 transitions, 1862 flow [2024-11-19 14:07:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:07:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:07:50,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 291 transitions. [2024-11-19 14:07:50,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44769230769230767 [2024-11-19 14:07:50,150 INFO L175 Difference]: Start difference. First operand has 120 places, 102 transitions, 655 flow. Second operand 10 states and 291 transitions. [2024-11-19 14:07:50,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 232 transitions, 1862 flow [2024-11-19 14:07:50,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 232 transitions, 1802 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-11-19 14:07:50,311 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 708 flow [2024-11-19 14:07:50,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=708, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2024-11-19 14:07:50,312 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 58 predicate places. [2024-11-19 14:07:50,312 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 708 flow [2024-11-19 14:07:50,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.55) internal successors, (331), 20 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:50,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:50,312 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:50,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 14:07:50,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 14:07:50,513 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:50,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:50,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1416192319, now seen corresponding path program 1 times [2024-11-19 14:07:50,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:50,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569818030] [2024-11-19 14:07:50,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:50,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:50,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:50,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569818030] [2024-11-19 14:07:50,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569818030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:50,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:50,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:07:50,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391510678] [2024-11-19 14:07:50,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:50,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:07:50,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:50,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:07:50,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:07:50,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-11-19 14:07:50,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 708 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:50,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:50,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-11-19 14:07:50,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:54,720 INFO L124 PetriNetUnfolderBase]: 24157/36351 cut-off events. [2024-11-19 14:07:54,720 INFO L125 PetriNetUnfolderBase]: For 92174/93349 co-relation queries the response was YES. [2024-11-19 14:07:54,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144925 conditions, 36351 events. 24157/36351 cut-off events. For 92174/93349 co-relation queries the response was YES. Maximal size of possible extension queue 1702. Compared 281889 event pairs, 4627 based on Foata normal form. 1311/31429 useless extension candidates. Maximal degree in co-relation 144871. Up to 20298 conditions per place. [2024-11-19 14:07:55,027 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 135 selfloop transitions, 15 changer transitions 0/169 dead transitions. [2024-11-19 14:07:55,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 169 transitions, 1456 flow [2024-11-19 14:07:55,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:07:55,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:07:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-11-19 14:07:55,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5138461538461538 [2024-11-19 14:07:55,028 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 708 flow. Second operand 5 states and 167 transitions. [2024-11-19 14:07:55,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 169 transitions, 1456 flow [2024-11-19 14:07:55,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 169 transitions, 1420 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-19 14:07:55,137 INFO L231 Difference]: Finished difference. Result has 121 places, 106 transitions, 704 flow [2024-11-19 14:07:55,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=704, PETRI_PLACES=121, PETRI_TRANSITIONS=106} [2024-11-19 14:07:55,138 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 55 predicate places. [2024-11-19 14:07:55,138 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 106 transitions, 704 flow [2024-11-19 14:07:55,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:55,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:55,138 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-19 14:07:55,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 14:07:55,138 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:55,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:55,139 INFO L85 PathProgramCache]: Analyzing trace with hash -51210848, now seen corresponding path program 2 times [2024-11-19 14:07:55,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:55,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865223507] [2024-11-19 14:07:55,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:07:55,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:55,149 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:07:55,150 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:07:55,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:55,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865223507] [2024-11-19 14:07:55,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865223507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:55,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653959178] [2024-11-19 14:07:55,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:07:55,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:55,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:55,176 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:55,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 14:07:55,235 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:07:55,235 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:55,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:07:55,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:07:55,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:55,272 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:07:55,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653959178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:55,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:55,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-19 14:07:55,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076854096] [2024-11-19 14:07:55,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:55,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:55,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:55,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:55,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:55,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-11-19 14:07:55,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 106 transitions, 704 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:55,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:55,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-11-19 14:07:55,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand